Sulfur-burner.



v B. GL'ARK.

SULFUB BURNER.

. APPLIOATION ILED SEPT.29, 1909.

Pate ted Mar. 15,191&

- WITHEEEE .46. e %M 5 'My invention can best be seen and under- Parisit ersten Umit; I s

cnnmns s. emen, or BANGOR, MAINE.

snnrmnunnnn i l e 952 190 I. speciflcation of Lettersratent. P t nta@ Marc, i& fim& 4

: Application filed September 29, 1909.' Serial No. 520,()73. v

To all whom ii may canm-'nr i u Referring to the drawings i represents i u Be it knownthat LGHARLES B. CLARK, of the furnace of which &2 and 3 are therespee .Bangoflrin ,the County of Penobscot and tive front and rearendsthereot. Theiur State of Maine, a citizen of the United nace is preferably made of fire brick or other sa 5 States, have invented anew and useful Imhoat resisting substance, and consists of rovement in Sulfur-Burning Furnaces, .of stationary structure. On'the inside the ter which the following is a fulhclear, and exact nace s divided by a separating partt on t description, .reference. being had'to the acinto two apartments 5 and 6, respectrveiy, companying drawings, forming a part of one above the other. The lower apartment o this specification, nexplainng its nature. 5 s what may be termed the chamber o'tthe .Th tial bj ct f my invenon. i to burner, or, in other words, the chami-ber in provide a sulfur burning furnace especially which the sulfr is ntally burned' The ada ted for burning -sulfur and 'orning jupper chanber 6 s what 'may'be terrned a sul di'oxid gas according to the proc ss conbustion chamber nasmuch- *as the-hot 70 described in my co-pending applicato for gases and products of combustion frcm the" Letters Patent, f th U it d State ;S ri -1 sulfur burning in the chamber 5 are adapted N 447350 fil d Au u t; 7, 1908 I id' to pass out from this chamher into the'chern application the 'process as theren d s rib d ber 6 where the combustion is completed.

. consists essentially in burningthe sulfur, ad-

mittin heated air'to the gases and products o combustion of the burning sulfur for efiecting a burning-of the Vap'orized suIfur, and then maintaining the 'gases and I products at such proper high degree of tem- .perature that any sulfur troxid therein may be gecomposed or converted into sulfur diox 4 Not only, as said before; in the present type of furnace especially adapted for practicing the process referred to, but it has further adaptation in that provision is made whereby the temperature of the`air admitted within the chamber of the burner or' Cham-r ber in which the sulfur is initiallyburned may be regulated as occasion may'require. During the burning of sulfur sulfur trioXid cannotwell be produced at a temperature varying from 420 to 1100 C. Accordingly in my present typeof furnace it is my fur- 40 ther object to burn the sulfur in heated air maintained within the limits aforementioned. r

It is a further object of my invention to provide a furnace presenting a compact 15 structure-and one alsowhich will not necessi tate the employment of any auxiliary operating means; to provide, in other words,

i a *statona'y furnace as difierentiatcd from a furnace having a movable or rotary part.

chamberfiy way of a connectingpasage This passage isarranged preferably the* front end of the 'furnace 'and is provided by' foreshortening the dividing pertitio n e, the

.gases passing from the chambert -upwardly around the end of'the partition- 4 and thence into the combustion chamher. Entrance'maybe had into the 'chamber of the burner at the front by Way of doors 8 9 represents the outlet pipe 'from the cem'- sa bustion chamber through which 'the gases pass out of the combustion chamber and into the pipesor connections of any system in connection with which the 'iurnace is used.

The sulfr is burned upon the floor (if 'the ee chamber 5. i prefer that the suliur shall be admitted inside this chamber by way oi an entering pipe '10, this ppe issuing from u rcceptacle or retort 11 in which. the sul'ur is nelted in any suitable manner the sul-fur passing from this receptacle through 'the directin pipe 10 on to the floor of the chant ber 5 of the bnx-ner.

Air is admittedfor inducing an initial 'burning of the'sultur in the following man ice ner. Passing 'through the cha'nber conduit 12 having thereinholes or'epenings into the chamber 5. The mouth of this-con duit is preferably' at the rear end of the fur nace at which point the conduit is open to the atmosphere-by which air may pass into stood by reference to the draWings,. in the same. Theopen 'end of the conduit 'is whichu i y controlled by a'shding gate i?) for regulat Figure l shows the furnace in frontelevaing the amount. of 'zur entering -thesane Fig. 2 s a section taken online 2- -2 Air is alsoadmitted -intothe' chamberfi ,ni oi Fig. l -ad-;Fig.- 3 is a section taken on' ,the bunuerby- Way' ef 'the porteve' cpea aga ,line of Fig g., v 14 extending'through thewalleoi the cham The gases ass from-the chamber '5 into-the 4 ber, the outer ends thereof being open to the atmosphere. A number of these ports or 'openings are provided preferably on either side of the furnace, the openings being successivelyarranged. The outeir end of each one of the openings is controlled by a sliding gate 15 for regulating the amount of air admitted therethrough into'the 'chamber 5 of the burner. A further ingress for air into the chamber of the burner may be provided by adjustable dampers 16 for-med in the doors 8 by which access is had into the chamber 5. In the partition 4: separating the cham'ber of the burner from the combustion chamber another conduit 17 is formed. This conduit extends from the rear end of .the furnace at which point the conduit is open to the atmosphere horizont'ally through the partition 4:, and opens at the forward end of the partition into the passage 7 which connects the'ehamber 5 of the burner with the combustion chanber. The open end of this conduit is controlled by a slide 18 for regulating the amount of air admitted to the conduit. Entrance is had into the combustion chanber by 'way of a door 19. In this door is an adjustable damper 20 by which air may be admitted into the combustion chamber as occasion may require.

l/Vithin the combustion chamber and preferably in the top part thereof is a pyrometer 21 for observing the temperature therein.

Now in connection with the above (lescribed apparatus assuming that sulfur has been admitted to the floor of the chamber 5 of the burner air is admitted for inducing the initial burning of thesulfur by .way of the conduit 12 and the ports 14 supplemented if need be by opening the adju stable dampers 16 in the doors8 at the front end of the furnace. Now by reason of the fact that the conduit 12 is located within the chamber 5 air entering into this conduit will of course be heated by the gases and products of combustion from the burning sulfur before entering the chamber of the burner. Aceordingly heated air will be supplied for eifecting the burning' of the sulfur. In order that the sulfur may not be burned in air at to'b high a temperatureas it might be if the only air admitted for burning the sulfur was by way of the conduit 12, further air is admitted by wayof the orts or openings 14: through the wall of the furnace which, as said before, are supplementedf need be through openings in the adjustable dampers 16. Now the air admitted through these openings- 14 or dampers 16 is a relatively cool air, or at any rate, very much cooler than the air within the conduit. Ac-' cordingly it, when mingl'ng with the air coming from the conduit, has a cooling l effect thereon when by a proper regulation of the sliding gate 13 controllng the mouth of the conduit and the gates 14 controlling bility of the dampers 16, not only may just the proper amount of air be admitted for burning the sulfur but the air may be kept at a proper temperature, which temperature, as said before, should not be below 400 or above 1100 C. to eliminate as much as possible the formation of sulfur trioxid gas. It is by way of the conduit 17 that air is admitted to mingle with the gases passing out of the chamber 5 of the burner into the combustion chamber for inclucing the burning of the-vaporized sulfur' therein in accordance with the process described in my aforesaid application. Inasmuch as this conduit is located'between the chamber of the burner and the combustion chamber the air admitted therethrough will of course be' subjected to the heat of both chambers. By means of the sliding gate 18 controlling the entrance to this conduit not only may a proper amount of air be admitted for burning the vaporized sulfur but by the regulation of this damper and also by a regulation of the damper 20 admitting a cooling air into the combustion chamber, justthe proper high degree of temperature maybe maintained within the combustion chamber for decomposing or convertng any sulfur trir ignited. As the sulfur burns air is admitted for inducing a continuation of the burning.

thereof by way of the conduit 12 supple t mented by the openings 14:, or if need be by the openings in the danper or dampers at the front end of the chan'ber. By a proper regulation of the doors or slides controlling these various openings a proper temperature may be maintained, which temperature is within the limits aforementioned when the sulfur will be consumed within the chamber of the burner and very little sulfur trioxid be formed. The gases from the chamber 5 will pass into the combustion chamber by way of the connecting passage 7 around the endof the partition 4. As the gases and products enter the combustion chamber heated air from the conduit 17 will commingle therewith sufficient in amount to induce a burning of the vaporized sulfur which may be eontained in the gases and products and then by opening the damper the sulfur is. burned, means whereby hot air may be introduced into 'the chamber of the burner for inducing an initial burning of the sulfur therein, and means whereby the temperature of the gases and air within said chanber may be controlled by the admission of a cooling air thereto.

2. A `su1fur burning furnace having a burner provided with a chamber in which the sulfur is burned, means whereby hot air may be ntroduced. into said chanber for inducing an initial burning of the sulfur theren, means whereby the temperature of the air and gases within said chamber may be controlled, a combustion chamber connecting with said ehamber of the burner,. means Whereby air may be supplied to the gases in said combustion chanber which means is adapted and arranged to the end that air ntroduced therethrough may be heated by the products of combustion, and means whereby the temperature of the commingled air and gases within the' combustion chamber may be controlled by a further admisson of air.

3. A sulfur burning furnace having a burner provided With a chamber in which ;the sulfur is burned, means whereby hot air may be introduced into said ehamber 'for inducing an initial burning of the sulfur therein, means whereby the temperature of the ases and air within said chamber may be controlled by the admission of a' cooling air thereto, a. combustion chamber connecting with'said chamber of the burner, means Whereby hot air may be supplied to the gases in said combuston chamber, and means Whereby the temperature of the commmglcd air and gases within the combustion chamber may be controlled by a further cooling air thereto.

4. A sulfur burning furnacc admissio of Having a burner within the chamber of which L e sul-- fur is burned, an ar receiving Conduit located within said ch anber and' opening into the same and which chamber of the burner i i k is provided With openings in the wall thereof for providing a further admission o' air thereto. r v

5. A sulfur burning furnace' having a burner -withn the chamber of which the sulfur is burn'ed,.an air receiving Conduit located within said chamber and opening into the 'same and which chamber of the burner is provided with openings in the wall thereof for providing a further admission of air thereto, means for controlling the mouth of said Conduit and means for controlli'g` the months of said, openings.

G. In a sulfur'burning bered structure having burner chambe: or ehamber in which the sul'fur is initially burned, and a combustion chamber located adjacent the burner chamber with a. connecting passage between said chambers whereby gas-;cs and vapors from the burning sulfur may pass from said burner chamber into said combustion chamber; means whereby air may be supplied to said burner for inducng an mitial burning 'urDaCe, a chamof the sulfur therein, and an air receivmg of said structure for and vapors conduit located inside supplying heated air to the gases within said combustion chamber.

7. Tn a sultur burning furnace, a chambered structure having formed therein a burner chamber r.chamber in which the sultur is initially burned and a combustion chamber located adjacent the burner chamber with a connecting passage between said chambers whereby gases and vapors from the burning sul-fur may pass from said burner chamber into said combustion chambcr, an air rcceiving conduit located within said burner chanber for inducing an initial burning of the sul'fur therein, means whereby the ten'perature of the hcated air and gases within said burner chamber may be controlled by cooling air as occasion may require.

: CHARLES B. CLARK.

VVitnesses VICTOR H. MU'I'TY, W'ALTER S. HALEY.

forned therein a v 

